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    <title>get_image_channel_data_type</title>
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      <div class="titlepage"></div>
      <div xmlns="" class="refnamediv">
        <a xmlns="http://www.w3.org/1999/xhtml" id="get_image_channel_data_type"></a>
        <h1>get_image_channel_data_type</h1>
        <p>
            Return the channel data type.
        </p>
      </div>
      <div class="refsynopsisdiv">
        <h2></h2>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
                    <strong class="fsfunc">
                        get_image_channel_data_type
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                <code>)</code></td>
              </td>
            </tr>
          </table>
        </div>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
                    <strong class="fsfunc">
                        get_image_channel_data_type
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_buffer_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                <code>)</code></td>
              </td>
            </tr>
          </table>
        </div>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
                    <strong class="fsfunc">
                        get_image_channel_data_type
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image2d_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                <code>)</code></td>
              </td>
            </tr>
          </table>
        </div>
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              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
                    <strong class="fsfunc">
                        get_image_channel_data_type
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image3d_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                <code>)</code></td>
              </td>
            </tr>
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              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
                    <strong class="fsfunc">
                        get_image_channel_data_type
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image1d_array_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                <code>)</code></td>
              </td>
            </tr>
          </table>
        </div>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">int</a>
                    <strong class="fsfunc">
                        get_image_channel_data_type
                    </strong>
                (</code>
                <td>
                    <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="otherDataTypes.html" target="pagedisplay">image2d_array_t</a>
                     <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>
                <code>)</code></td>
              </td>
            </tr>
          </table>
        </div>
      </div>
      <div class="refsect1">
        <a id="description"></a>
        <h2>Description</h2>
        <p>
            Return the channel data type. Valid values are:</p>
        <div class="literallayout">
          <p><br />
CLK_SNORM_INT8<br />
CLK_SNORM_INT16<br />
CLK_UNORM_INT8<br />
CLK_UNORM_INT16<br />
CLK_UNORM_SHORT_565<br />
CLK_UNORM_SHORT_555<br />
CLK_UNORM_SHORT_101010<br />
CLK_SIGNED_INT8<br />
CLK_SIGNED_INT16<br />
CLK_SIGNED_INT32<br />
CLK_UNSIGNED_INT8<br />
CLK_UNSIGNED_INT16<br />
CLK_UNSIGNED_INT32<br />
CLK_HALF_FLOAT<br />
CLK_FLOAT</p>
        </div>
        <p>
        </p>
      </div>
      <div class="refsect1">
        <a id="notes"></a>
        <h2>Notes</h2>
        <p>
          The values returned by <code class="function">get_image_channel_order</code>
          as shown above with the <code class="constant">CLK_</code> prefixes correspond
          to the <code class="constant">CL_</code> prefixes used to describe the image
          channel order and data type in the table of supported names and values in
          <a class="citerefentry" href="clCreateSubBuffer.html"><span class="citerefentry"><span class="refentrytitle">clCreateSubBuffer</span></span></a>
          and list of supported Image Channel Order Values for
          <a class="citerefentry" href="clCreateImage.html"><span class="citerefentry"><span class="refentrytitle">clCreateImage</span></span></a>.  For
          example, both <code class="constant">CL_UNORM_INT8</code> and <code class="constant">CLK_UNORM_INT8</code>
          refer to an image channel data type that is an unnormalized unsigned 8-bit integer.
        </p>
        <p>
          The following table describes the mapping of the number of channels of an image
          element to the appropriate components in the float4, int4 or uint4 vector data type
          for the color values returned by <code class="function">read_image{f|i|ui}</code> or supplied
          to <code class="function">write_image{f|i|ui}</code>. The unmapped components will be set
          to <code class="constant">0.0</code> for red, green and blue channels and will be set to
          <code class="constant">1.0</code> for the alpha channel.
        </p>
        <p>
          </p>
        <div class="informaltable">
          <table border="1">
            <colgroup>
              <col align="center" class="col1" />
              <col align="center" class="col2" />
            </colgroup>
            <thead>
              <tr>
                <th align="center">Channel Order</th>
                <th align="center"><span class="type">float4</span>, <span class="type">int4</span> or <span class="type">unsigned int4</span> components of channel data</th>
              </tr>
            </thead>
            <tbody>
              <tr>
                <td align="center"><code class="constant">CL_R</code>, <code class="constant">CL_Rx</code></td>
                <td align="center">
                  <code class="constant">(r, 0.0, 0.0, 1.0)</code>
                </td>
              </tr>
              <tr>
                <td align="center">
                  <code class="constant">CL_A</code>
                </td>
                <td align="center">
                  <code class="constant">(0.0, 0.0, 0.0, a)</code>
                </td>
              </tr>
              <tr>
                <td align="center"><code class="constant">CL_RG</code>, <code class="constant">CL_RGx</code></td>
                <td align="center">
                  <code class="constant">(r, g, 0.0, 1.0)</code>
                </td>
              </tr>
              <tr>
                <td align="center">
                  <code class="constant">CL_RA</code>
                </td>
                <td align="center">
                  <code class="constant">(r, 0.0, 0.0, a)</code>
                </td>
              </tr>
              <tr>
                <td align="center"><code class="constant">CL_RGB</code>, <code class="constant">CL_RGBx</code></td>
                <td align="center">
                  <code class="constant">(r, g, b, 1.0)</code>
                </td>
              </tr>
              <tr>
                <td align="center">
                  <code class="constant">CL_RGBA, CL_BGRA, CL_ARGB</code>
                </td>
                <td align="center">
                  <code class="constant">(r, g, b, a)</code>
                </td>
              </tr>
              <tr>
                <td align="center">
                  <code class="constant">CL_INTENSITY</code>
                </td>
                <td align="center">
                  <code class="constant">(I, I, I, I)</code>
                </td>
              </tr>
              <tr>
                <td align="center">
                  <code class="constant">CL_LUMINANCE</code>
                </td>
                <td align="center">
                  <code class="constant">(L, L, L, 1.0)</code>
                </td>
              </tr>
            </tbody>
          </table>
        </div>
        <p>
      </p>
        <p>
        A kernel that uses a sampler with the <code class="constant">CL_ADDRESS_CLAMP</code> addressing
        mode with multiple images may result in additional samplers being used internally by an
        implementation. If the same sampler is used with multiple images called via <a class="citerefentry" href="read_imagef2d.html"><span class="citerefentry"><span class="refentrytitle">read_image{f|i|ui}</span></span></a>,
        then it is possible that an implementation may need to allocate an additional
        sampler to handle the different border color values that may be needed depending
        on the image formats being used.  These implementation allocated samplers
        will count against the maximum sampler values supported by the device and
        given by <code class="constant">CL_DEVICE_MAX_SAMPLERS</code>. Enqueuing a kernel that
        requires more samplers than the implementation can support will result in a
        <code class="constant">CL_OUT_OF_RESOURCES</code> error being returned.
      </p>
      </div>
      <div class="refsect1">
        <a id="specification"></a>
        <h2>Specification</h2>
        <p>
            <img src="pdficon_small1.gif" />

            <a href="http://www.khronos.org/registry/cl/specs/opencl-1.2.pdf#page=292" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="imageFunctions.html"><span class="citerefentry"><span class="refentrytitle">Image Functions</span></span></a>
        </p>
      </div>
      <div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2011 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
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the condition that this copyright notice and permission notice shall be included
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